Samuel s



'i UNITED STATES PATENT OFFICE..

SAMUEL s. JONES AND CHARLES M. RITTENHOUSE, or' NoRRI'STowN, PA.

ACOUPLING FOR P|PES.`

SPECIFICATION forming part ofLeti-,ers Patent No. 260,874, dated July11, 1882.

' Application filed February 11, 1882. (No modelJ ough of Norristown,Montgomery county, State of Pennsylvania, have invented certain new anduseful Improvements in Couplings for Lead and other Metal Pipes; and wedo hereby declare the following to be a full, clear, and

exact description of thc same, reference being liad.- to' the annexeddrawing, making part hereof. Y

The nature ofour invention'will be fully shown by the followingdescription and claim.

In the drawing, Figure 1 represents our couplingin placeconnecting theadjoining ends of two sections of lead pipe.

A is an inner ierrule, being a true cylinder upon its inner surface, buttapering from the shoulder B upon its outside to its respective ends.

C" C are two slightly tapering clamp or jam collars,- having the sainetaper respectively as the outer taper ot' ferrulc A, butbeing larger indiameter than the latter.

D'D are two sections of lead pipe, joined by theuconpling and ,forming ajoint without soldering. The application of our coupling tomake a closejoint between the ends of pipes is as follows :Y The smallest innerdiameters of the respective collars C C are slightly larger than thelargest diameter of the tubes or pipes to be joined. One of thesecollars is first slipped over theend of each of the pipes to be joinedand pushed back away from the end to somedistanee-sayfour tosixincheswith the flaring end of the collar. toward thev end of the pipeupon whichit is placed. The double-ended ferrnle (outwardly taperingtoward both ends from about the middle) is of about the same outwarddiameter at its ends as the inner diameters of the pipes to be joined.To join the pipes each end ofthe ferrule is driven or wedged into theendot' its respective pipe until each -pipe end enr velopsthe ferrulenearly up to the middle ''f the latter. The pipe ends will .now have aHare correspondingwith the taper of the enveloped ferrule ends. 'Thedaring jam-collars C C are now drawn toward the respective pipeends,and, by means of a clamping-tool,4

chisel and hammer, large nippers, or other convenient means, bearingagainst lian ges H H', which will suggest themselves to the mind of askilled mechanic, are forced np on the Haring ends of the pipes, wherebythe latter are Vtightly jammed between the interior ferrule and theoutwardly enveloping collars'C C. In the case of lead and othersot't-metal pipes a perfectly-tight joint is thus formed. The collars()C', Fig. 1, are provided with anges H H', and, if desired, an oxdinaryclamp or clamps can be employed lo lap over these iianges and preventthecollars from slipping back and thus loosening the joint.

A middle outward ange, B, canf be enlployed on the ferrule A, as shownin Fig. 1, and the pipes driven up against it before the jam-collars aredriven np,it' desired.

We are wellaware that right and left doublethreaded ferrules havebeenused heretofore to join tubing or'pi'ping; but we do not claim these.

The flanges H H are very essential in driving up the two collars,`asthey furnish a rest or hold for the tool,.which is struck in driving.Wend it highly important, also, to inaintain'about the same taper intheinterior of the collars C C as the taper of the ferrule A, so thatthe soft lead pipe between may simply be jammed or crushed between thetwo flared surfaces-viz., the inner surface ot' the collar and the outersurface of the fcrrule. If this taper is not so maintained, the edge ofthe collar will ent the pipe as it is being driven on, instead ofcrushing or jamming it, i

thus leaving a joint which is liable to leak, and leaving the 4collarliable to slide back through not being jammed. A screw-thread in theinterior of the collar will also cnt the lead.

We are also aware of Letters Patent Nos. 66,658 and 198,726 5 but we donot claim these.

What we claim as new is- In a coupling for tubes and pipes, thecombination of the double-tapered hollow plain ferrule A and thecorrespondingly-flared plain collars U C', having anges or shoulders HH', adapted to be driven up byblows struck upon the anges, and alladapted to hold and crush or jam the ends of two pipes toform a closejoint, in the manner described.

SAML. S. JONES. CHARLES M. RITIEN HOUSE.

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